69,371
社区成员
发帖
与我相关
我的任务
分享
//#include<bits/stdc++.h>
#include <stdio.h>
#include <stdlib.h>
//using namespace std;
char s[50];
int main(){
int d1,d2,d3;
int cnt=0;
char op;
//while(gets(s)){
while(scanf("%d%c%d=%d", &d1, &op, &d2, &d3) == 4){
//d3=1000;
//sscanf(s,"%d%c%d=%d",&d1,&op,&d2,&d3);
if(d1+d2==d3&&op=='+')
{
cnt++;
}
if(d1-d2==d3&&op=='-')
{
cnt++;
}
}
printf("%d\n",cnt);
return 0;
}